JPS6193469A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS6193469A JPS6193469A JP59213365A JP21336584A JPS6193469A JP S6193469 A JPS6193469 A JP S6193469A JP 59213365 A JP59213365 A JP 59213365A JP 21336584 A JP21336584 A JP 21336584A JP S6193469 A JPS6193469 A JP S6193469A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- developer
- sleeve
- container
- magnetic particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
Ａ、発明は電子写真・静電記録・磁気記録等の従来公知
の適宜の原理・プロセスを利用して感光体・誘電体・磁
性体などの潜像保持体面に形成した静電潜像・磁気潜像
等の電気的潜像を乾式現像剤（トナー）でＩＩＴ視化す
る現像装置に関する。[Detailed Description of the Invention] A. The invention is a method of forming a latent image on the surface of a photoreceptor, dielectric, magnetic material, etc. using appropriate conventionally known principles and processes such as electrophotography, electrostatic recording, and magnetic recording. The present invention relates to a developing device that visualizes an electrical latent image such as an electrostatic latent image or a magnetic latent image using a dry developer (toner).
更に詳しぐは装置の使用始めに現像剤供給容器内に先ず
第１の現像剤成分を１次いで第２の現像剤成分を順次投
入して稼動状７Ｌにする方式のものについて、現像剤供
給容器内へ第１及び第２の現像剤成分の投入順序間違い
を厳に防屯することを目的とする。For more details, please refer to the developer supply container of the system in which the first developer component is sequentially poured into the developer supply container and then the second developer component is sequentially poured into the developer supply container at the beginning of use of the device to make the operating state 7L. The purpose of this invention is to strictly prevent errors in the order in which the first and second developer components are introduced.
本出願人は先に上記のような方式の現像装置として、現
像剤供給容器内に先ず第１の現像剤成分として磁性粒子
を投入して回転成は回動駆動される現像剤保持部材の現
像剤供給容器の内方側の面部分に磁気吸着層（第１層）
として吸着保持させ、次いで第２の現像剤成分として非
磁性現像剤を投入して上記磁性粒子磁気吸着層の外側に
貯溜（第２層）させて現像剤保持部材面に非磁性現像剤
の薄層をコーティング形成させ、その非磁性現像剤のコ
ーティング薄層を潜像保持体面に適用することにより潜
像の現像を行うものを提案した（特願昭５８−１５１０
２８号）。The present applicant has previously developed a developing device of the above type, in which magnetic particles are first introduced into a developer supply container as a first developer component, and the developer retaining member is rotationally driven. Magnetic adsorption layer (first layer) on the inner surface of the agent supply container
Then, a non-magnetic developer is introduced as a second developer component and stored (second layer) on the outside of the magnetic particle magnetic adsorption layer to form a thin layer of non-magnetic developer on the surface of the developer holding member. He proposed a system in which a latent image is developed by forming a coating layer and applying a thin coating layer of a non-magnetic developer to the surface of a latent image carrier (Japanese Patent Application No. 1510/1983).
No. 28).
以下便宜上この現像装置を例にして説明する。For convenience, this developing device will be explained below as an example.
第１図は該方式現像装置の構成説明図である。図におい
て、１４は現像剤供給容器、１２は現像剤保持部材とし
ての現像スリーブである。現像スリーブ１２は例えばア
ルミニウム等の非磁性スリーブであり、現像剤供給容器
１４の左側壁の下部に容器長手方向に形成した横長開口
に、右略半周面を容器１４内へ突入させ、左略半周面を
容器外−３露出させて回転自由に軸受させて横設してあ
り、矢車の反時計方向すに回転駆動される。現像ｆ１す
保持部材１２はに記円筒体（スリーブ）に限ら噌−同動
駆動される無端ベルト形態等にしてもよい。ｌｉＡ現像
スリーブ１２の容器外露出面は、矢ｚｌ＜ ａ方向に面
移動駆動されている感光体等の潜像保持体１１面に僅小
な隙間を存して対面している。FIG. 1 is an explanatory diagram of the structure of this type developing device. In the figure, 14 is a developer supply container, and 12 is a developing sleeve as a developer holding member. The developing sleeve 12 is, for example, a non-magnetic sleeve made of aluminum or the like, and its right half-circumferential surface extends into the container 14 into a horizontally elongated opening formed in the lower part of the left side wall of the developer supply container 14 in the longitudinal direction of the container, and its left substantially half-circumferential surface extends into the container 14. It is horizontally installed with its surface exposed to the outside of the container and rotatably supported by a bearing, and is driven to rotate in the counterclockwise direction of the arrow wheel. The holding member 12 for the development f1 may be in the form of an endless belt or the like which is driven in conjunction with the cylindrical body (sleeve) mentioned above. The surface of the liA developing sleeve 12 exposed outside the container faces the surface of the latent image holder 11, such as a photoreceptor, which is driven to move in the direction of arrow zl<a, with a small gap therebetween.
１３は現像スリーブ１２内に挿入し、図示の位１′宜争
姿勢に位置決め保持した固定磁界発生手段としての固定
の永久磁石（マグネット）であり、現像スリーブ１２が
回転駆動されてもこの磁石１３は図示の位置・姿勢にそ
のまま保持される。この磁石１３はＮ極１７、Ｓ極１８
の磁極を有する。Reference numeral 13 denotes a fixed permanent magnet (magnet) as a fixed magnetic field generating means inserted into the developing sleeve 12 and positioned and held in the illustrated position 1'. Even when the developing sleeve 12 is rotationally driven, this magnet 13 is maintained at the position and posture shown in the figure. This magnet 13 has a north pole 17 and a south pole 18
has magnetic poles.
磁イｔ１３は永久磁石に代えて電磁石を配設してもよい
。The magnet t13 may be provided with an electromagnet instead of a permanent magnet.
２３は現像スリーブ１２を配設した現像剤供給容器開口
の」−縁側に、基部を容器側壁に固定し、先端側は開口
上縁位置よりも容器１４の内方へ突入させて開ロＪ：縁
長手に沿って配設した磁性粒子拘束部材としての磁性ブ
レードであり、例えば鉄板を横断簡略〈字形に曲げ加工
したものである。Reference numeral 23 denotes an opening opening of the developer supply container in which the developing sleeve 12 is disposed, with its base fixed to the side wall of the container, and the tip end protruded into the container 14 from the upper edge of the opening. The magnetic blade is a magnetic particle restraining member disposed along the length of the edge, and is made by bending, for example, an iron plate into a crosswise simplified shape.
第２図は上記磁性プレート２３の現像スリーブ１２に対
する姿勢・角度関係図である。１９は磁極１２よりもス
リーブ回転方向下に側で、且つスリーブ１２を配設した
容器開口の上縁位置よりもスリーブ回転方向上流側間に
定めたスリーブ上の点、文はブレードの中心線、ｎは点
１９位置におけるスリーブ１２の法線である。而して磁
性ブレード２３はスリーブ１２に関してその先端部を点
１９位ｔにスリーブ１２面と隙間間隔ｄをあけて位置さ
せ、′珪つ点１９の位置におけるスリーブ１２の法線ｎ
に対しブレードの中心縄文との為す角度δをもたせてス
リーブ移動方向下流側に向けて配置しである。０はスリ
ーブ１２の回転中心を通る垂直線ｍと前記法線ｎのなす
角度、Ｐはスリーブ１２の回転中心と磁極１７の中心と
を結んだ線、πは鎖線Ｐと前記垂直線ｍとのなす角１１
（磁極１７の位置角度）である。点１９位置における磁
性ブレード２３の先端部と現像スリーブ１２面との前記
隙間間隔ｄはｔｏｏ−ｉｏｏ。FIG. 2 is a diagram showing the attitude and angle relationship of the magnetic plate 23 with respect to the developing sleeve 12. 19 is a point on the sleeve defined below the magnetic pole 12 in the rotational direction of the sleeve and upstream in the rotational direction of the sleeve from the upper edge position of the container opening in which the sleeve 12 is disposed; n is the normal to the sleeve 12 at the point 19 position. The magnetic blade 23 has its distal end located at a point 19 t with a gap d from the surface of the sleeve 12 with respect to the sleeve 12;
The sleeve is disposed toward the downstream side in the direction of movement of the sleeve, with an angle δ formed between the sleeve and the center of the blade. 0 is the angle between the vertical line m passing through the rotation center of the sleeve 12 and the normal line n, P is the line connecting the rotation center of the sleeve 12 and the center of the magnetic pole 17, and π is the angle between the chain line P and the vertical line m. angle 11
(position angle of magnetic pole 17). The gap d between the tip of the magnetic blade 23 and the surface of the developing sleeve 12 at the point 19 position is too-iooo.
鉢、好ましくは２００〜５００ＩＬで、この実施例では
３００μである。この間隔ｄが１ＯＯＪＬより小さいと
、後述する磁性粒子が詰まり、ブレード外部へ押し出さ
れる欠点がある。また１０００ｕより大きいと、振動で
後述する非磁性現像剤が多、′＋１に漏れ出して、薄層
が形成できなくなる。Pots, preferably 200-500 IL, in this example 300μ. If the distance d is smaller than 1 OOJL, there is a drawback that magnetic particles, which will be described later, become clogged and are pushed out of the blade. Moreover, if it is larger than 1000u, a large amount of the non-magnetic developer (described later) leaks out to '+1' due to vibration, making it impossible to form a thin layer.
第１図で２７は磁性ブレード２３の上面側に下面を接触
させ、前端面２７ａをアンダカット面とした磁性粒子ｗ
Ｊ環域限定部材である。In FIG. 1, 27 is a magnetic particle w whose lower surface is in contact with the upper surface side of the magnetic blade 23 and whose front end surface 27a is an undercut surface.
This is a J ring area limiting member.
２０・２４は現像剤供給容器１４内に順次に投入収容し
た第１の現像剤成分としての磁性粒子と第２の現像剤成
分としての非磁性現像剤である。Reference numerals 20 and 24 designate magnetic particles as a first developer component and non-magnetic developer as a second developer component, which are sequentially charged and housed in the developer supply container 14.
現像剤供給容器１４の底板は現像剤保持部材たる現像ス
リーブ１２の下方に延長位置させて現像剤が外部に漏れ
ないようにしである。またこの現像剤の外部への漏出の
防ロニをさらに確実ならしめるためにその延長底板１４
ｂの上面に漏出現像剤を受は入れて拘束する漏出現像剤
捕集部材１４ｄと、延長底板１４ｂの先端縁長手に沿っ
て現像剤飛散防止部材２１を配設しである。この部材２
１には現像剤と同極性の電圧が印加される。The bottom plate of the developer supply container 14 is extended below the developing sleeve 12, which is a developer holding member, to prevent the developer from leaking to the outside. In addition, in order to further ensure the prevention of leakage of the developer to the outside, the extended bottom plate 14 is
A leaked developer collecting member 14d for receiving and restraining the leaked developer is provided on the top surface of the extension bottom plate 14b, and a developer scattering prevention member 21 is disposed along the length of the distal end edge of the extended bottom plate 14b. This member 2
1 is applied with a voltage having the same polarity as the developer.
磁性粒子２０は粒径が３０〜２００延、好ましくは７０
〜１５０＃Ｌである。各磁性粒子は磁性材料のみから成
るものでも、磁性材料と非磁性材料との結合体でも良い
し、二種以上の磁性粒子の混合物でも良い。そしてこの
磁性粒子２０を先ずはりその磁性粒子２０が容器１４内
にダんでいるスリーブ面領域、即ちスリーブ１２を配設
した磁性体からなる容器開口下縁部１４ａから磁性粒子
拘束部材たる磁性ブレード２３の先端部までのスリーブ
面領域各部にスリーブ１２面の磁石１３による磁界によ
り吸着保持され磁気吸着層として該スリーブ面領域を全
体に覆った状態となる。非磁性現像剤２４は１〕記磁性
粒子２０の投入後容器１４内に投入されることにより］
−記スリーブ１２に対する第１層としての磁性粒子磁気
吸着層の外側に多１．１−に貯溜して存在する。The magnetic particles 20 have a particle size of 30 to 200 mm, preferably 70 mm.
~150#L. Each magnetic particle may be made of only a magnetic material, a combination of a magnetic material and a non-magnetic material, or a mixture of two or more types of magnetic particles. The magnetic particles 20 are first transferred from the sleeve surface area where the magnetic particles 20 are suspended in the container 14, that is, from the container opening lower edge 14a made of a magnetic material on which the sleeve 12 is disposed, to a magnetic blade 23, which is a magnetic particle restraining member. Each part of the sleeve surface area up to the tip end is attracted and held by the magnetic field of the magnet 13 on the surface of the sleeve 12, and the sleeve surface area is completely covered as a magnetic attraction layer. The non-magnetic developer 24 is 1] placed in the container 14 after the magnetic particles 20 are placed therein.
- Magnetic particles are accumulated and exist outside the magnetic adsorption layer as the first layer for the sleeve 12.
１−記最初に投入する磁性粒子２０は、磁性粒子に勾し
てもともと約２〜７０％（重Ｈ，；、 ）の非磁性現像
剤を含むことか好ましいが、＆ｉ磁性粒子みとしても良
い。又磁性粒子２０は一旦上記スリーブ面領域に磁気吸
着層として吸着保持されれば装置振動や、装置をかなり
大きく傾けても実質的に片′ぷり流動してしまうことは
なく、上記スリーブ面・；ｔ１域を全体的に覆った状態
が保持される。而して容器１４内に」−２のように磁性
粒子２０と非磁性現像剤２４を順次に投入収容した状態
において、ｒｅ石１３の磁極１７位置に対応するスリー
ブ表面イ・１近の磁性粒子磁気吸着層部分には磁極１７
の強い磁界で磁性粒子の磁気ブラシ２０ａが形成されて
いる。又磁性粒子拘束部材たる磁性ブレード２３の先端
部近傍部の磁性粒子磁気吸着部分はスリーブ１２が矢示
す方向に回転駆動されても重力と磁気力及び磁性ブレー
ド２３の存在による効果にノ＾づ〈拘束力と、スリーブ
１２の移動方向への搬送力との釣合によってスリーブ１
２表面の点１９位置で拘束され、多少は動き得るが殆ど
不動の静止層２０ｂを形成する。又スリーブ１２を矢示
す方向に回転させた時、磁極１７の配置位置と磁性粒子
２０の流動性及び磁気特性を適宜選ぶことによって、前
記磁気プラン２０ａは磁極１７の付近で矢印Ｃ方向に循
環し、循環層２０ｃを形成する。該循環層２０ｃにおい
て、スリーブ１２に比較的近い磁性粒子分はスリーブ１
２の回転によって磁極１７近傍からスリーブの回転下流
側にある前記の静止層２０ｂのＬへ盛り上る。すなわち
上部へ押し上げる力を受ける。その押し上げられた磁性
粒子分は、磁性ブレード２３の」二部に設けた磁性粒子
循環域限定部材２７により、その循環領域の上限を決め
られているため、磁性ブレード２３上へ乗り上がること
なく、張力によって落下し、再び磁極１７近傍へ戻る。1-It is preferable that the magnetic particles 20 to be initially introduced originally contain about 2 to 70% (heavy H, ;, ) of non-magnetic developer compared to the magnetic particles, but they may also contain &i magnetic particles. . Furthermore, once the magnetic particles 20 are adsorbed and held on the sleeve surface region as a magnetic adsorption layer, they will not substantially drift to one side even if the device is vibrated or the device is tilted considerably; The state in which the t1 region is completely covered is maintained. When the magnetic particles 20 and the non-magnetic developer 24 are sequentially charged and housed in the container 14 as shown in FIG. There is a magnetic pole 17 in the magnetic adsorption layer part.
A magnetic brush 20a of magnetic particles is formed by a strong magnetic field. In addition, the magnetic particle magnetic adsorption portion near the tip of the magnetic blade 23, which is a magnetic particle restraining member, is not affected by the effects of gravity, magnetic force, and the presence of the magnetic blade 23 even when the sleeve 12 is rotationally driven in the direction indicated by the arrow. Due to the balance between the restraining force and the conveying force in the moving direction of the sleeve 12,
The layer 20b is restrained at the point 19 on the surface of the layer 2, forming a stationary layer 20b that can move to some extent but is almost immobile. Furthermore, when the sleeve 12 is rotated in the direction shown by the arrow, by appropriately selecting the arrangement position of the magnetic pole 17 and the fluidity and magnetic properties of the magnetic particles 20, the magnetic plan 20a circulates in the direction of the arrow C near the magnetic pole 17. , forming a circulation layer 20c. In the circulation layer 20c, the magnetic particles relatively close to the sleeve 12 are in the sleeve 1.
2, the magnetic flux rises from the vicinity of the magnetic pole 17 to L of the stationary layer 20b on the rotationally downstream side of the sleeve. In other words, it receives a force that pushes it upward. The pushed up magnetic particles do not climb onto the magnetic blade 23 because the upper limit of the circulation area is determined by the magnetic particle circulation area limiting member 27 provided at the second part of the magnetic blade 23. It falls due to the tension and returns to the vicinity of the magnetic pole 17 again.
この場合スリーブ表面から遠くに位ｊξするなどして受
ける押し上げ力の小さい磁性粒子分は、磁性粒子循環域
限定部材２７に到達す、る前に落下する場合もある。つ
まり該循環層２０ｃでは重力と磁極による磁気力と摩擦
力及び磁性粒子の流動性（粘性）によって矢印Ｃの如く
磁性粒子の磁気ブラシ２０ａの循環か行われ、磁気ブラ
シはこの循環の際に磁性粒子層の」−にある現像剤層か
ら非磁性現像剤２４を逐次ｆｌｙ込んで現像剤供給容器
１４内の下部に戻り、即トスリーブ１２の回転駆動に伴
ないこの循環を繰返す。磁性ブレード２３は直接にはこ
の循環には閏ＪＰシない。In this case, magnetic particles that are located far away from the sleeve surface and receive a small push-up force may fall before reaching the magnetic particle circulation area limiting member 27. In other words, in the circulation layer 20c, the magnetic brush 20a of magnetic particles is circulated as shown by arrow C due to the magnetic force and frictional force due to gravity and magnetic poles, and the fluidity (viscosity) of the magnetic particles, and during this circulation, the magnetic brush 20a is made of magnetic particles. The non-magnetic developer 24 is sequentially flown from the developer layer located at the lower part of the particle layer and returned to the lower part of the developer supply container 14, and this circulation is repeated as the sleeve 12 is rotated. The magnetic blade 23 is not directly involved in this circulation.
スリーブ１２面の磁性粒子磁気吸着層内に逐次に取込ま
れ混入した非磁性現像剤は磁性粒子の流動で磁性粒子と
の摩擦、現像スリーブ面との摩擦等でりｉ？電する。こ
の場合好ましくは磁性粒子表面に醇化膜または非磁性現
像剤と静電的に同準位にある樹脂などの絶縁処理を施し
、磁性粒子からのトリボ伺≠を少なくし、必要な帯電を
現像スリーブ１２から受けるようにすれば磁性粒子の劣
化の！影響を防ぐことができるとともに現像スリーブ１
２への現像剤塗布が安定する。帯電した現像剤は非磁性
であるため、磁極１７の磁界によっては拘束されず、ス
リーブ面がスリーブ１２を配設した容器開口下縁部、１
４ ａから磁性プレート２３の先端部まで回転移動する
間に、鏡映力によってスリーブ表面に各部均一に薄くコ
ーティングされる。そして磁性ブレード２３の先端部近
傍の磁性粒子静止層２０ｂの磁性粒子はスリーブ１２が
回転していても、前述したように重力と磁気力及び磁性
ブレード２３の存在による効果に基つく拘束力と、スリ
ーブ１２の移動方向への搬送力との釣合によって拘束さ
れて磁性ブレード２３の先端部とスリーブ１２との隙間
部ｄを通過せず、スリーブ１２面に形成された上記非磁
性現像剤のコーティング薄層のみがスリーブ１２の回転
に伴ない隙間部ｄを通過して潜像保持体１１側に回動し
１該層像保持体面に接近対面する。２４ａは現像スリー
ブ１２面に形成された非磁性現像剤のコーティング薄層
を示す。又−１−記非磁性現像剤の薄層を形成した現像
スリーブ１２と潜像保持体１１との接近対面部を現像部
３０と称す。The non-magnetic developer that is sequentially taken in and mixed into the magnetic particle magnetic adsorption layer on the sleeve 12 surface causes friction with the magnetic particles and friction with the developing sleeve surface due to the flow of the magnetic particles. Power up. In this case, it is preferable to insulate the surface of the magnetic particles with an insulating film or a resin that is at the same electrostatic level as the non-magnetic developer, to reduce triboelectricity from the magnetic particles, and to transfer the necessary charge to the developing sleeve. If you let it receive from 12, the magnetic particles will deteriorate! In addition to being able to prevent the influence, the developing sleeve 1
The developer application to 2 becomes stable. Since the charged developer is non-magnetic, it is not restrained by the magnetic field of the magnetic pole 17, and the sleeve surface is located at the lower edge of the opening of the container where the sleeve 12 is disposed.
During rotational movement from 4a to the tip of the magnetic plate 23, the surface of the sleeve is uniformly and thinly coated at each part due to mirroring force. Even when the sleeve 12 is rotating, the magnetic particles in the magnetic particle stationary layer 20b near the tip of the magnetic blade 23 have a restraining force based on gravity, magnetic force, and the effect of the presence of the magnetic blade 23, as described above. The coating of the non-magnetic developer formed on the surface of the sleeve 12 does not pass through the gap d between the tip of the magnetic blade 23 and the sleeve 12 due to the balance with the conveyance force in the moving direction of the sleeve 12. As the sleeve 12 rotates, only the thin layer passes through the gap d, rotates toward the latent image carrier 11, and approaches the image carrier surface. Reference numeral 24a indicates a thin coating layer of non-magnetic developer formed on the surface of the developing sleeve 12. In addition, the portion where the developing sleeve 12 and the latent image holder 11, on which a thin layer of non-magnetic developer is formed as described in -1-, come close to each other is referred to as a developing section 30.
現像部３０において、現像スリーブ１２面側のＪ１磁性
現現像層２４ａは、潜像保持体１１と現像スリーブ１２
の間にバイアス電＠ｊ２５で印加した現像バイアスの電
界によって潜像保持体１１面へ潜像パターンに対応して
選択的に移行付着し潜像の現像２４ ｂが１１「１次に
行われる（この現像方法については例えば特公昭５８−
３２３７５号公報参１１ｒ、ｊ ）。バイアス屯源２５
は交流でも直流でもよいか、ｐ〕流に直流を利得したも
のが好ましい。In the developing section 30, the J1 magnetic developing layer 24a on the side of the developing sleeve 12 is connected to the latent image holder 11 and the developing sleeve 12.
During this period, the electric field of the developing bias applied by the bias voltage @j25 selectively transfers and adheres to the surface of the latent image carrier 11 in accordance with the latent image pattern, and the development of the latent image 24b is performed in the first step (11). Regarding this developing method, for example,
32375 Publication Reference 11r, j). bias tongen 25
The current may be an alternating current or a direct current, but it is preferable that the current is obtained by adding a direct current to the p] current.
現像部３０を通過して現像剤層が選択的に現像に供され
て消費された現像スリーブ面は引続くスリーブの回転駆
動で再び現像剤供給容器１４内へ−戻り１あらためて磁
性粒子磁気吸着層と接触しその層内に含有されている非
磁性現像剤のコーティングを受けるサイクルが繰り返さ
れ、潜像保持体１１面の現像が連続的に実行される。磁
性粒子−磁気吸着層へは前記したように磁性粒子の循環
層２０ｃによりその外側に存在する非磁性現像剤２４の
貯溜層から逐次現像剤が取込まれて自然補給される。尚
、現像スリーブの所謂ゴースト像現象を防止するために
容器１４内へ戻り回動した現像スリーブ面から現像に供
されなかった現像剤層を一ロ、スクレーパ手段（不図示
）でかき落し、その現像剤層かき落しスリーブ面を磁性
粒子磁気吸着層に接触させて現像剤のコーティングを行
わせるようにするのもよい。The surface of the developing sleeve, which has passed through the developing section 30 and has been selectively developed and consumed, is returned to the developer supply container 14 by the subsequent rotational drive of the sleeve 1 to form the magnetic particle magnetic adsorption layer again. The cycle of contacting the latent image carrier 11 and being coated with the non-magnetic developer contained in the layer is repeated, and the surface of the latent image carrier 11 is continuously developed. As described above, the magnetic particle-magnetic adsorption layer is naturally replenished by successively taking in developer from the storage layer of non-magnetic developer 24 existing outside the magnetic particle circulation layer 20c. In order to prevent the so-called ghost image phenomenon of the developing sleeve, the developer layer that has not been subjected to development is scraped off from the surface of the developing sleeve that has been rotated back into the container 14 using a scraper means (not shown). It is also preferable to bring the developer layer scraping sleeve surface into contact with the magnetic particle magnetic adsorption layer to coat the developer.
非磁性現像剤２４には、流動性を高めるためにシリカ粒
子や、例えば転写方式の画像形成装置番こおいて潜像保
持体１１たる感光体表面の研磨のために研磨剤粒子等を
外添してもよい。又非磁性現像剤２４中に少早の磁性粒
子を加えたものを用いてもよい。The non-magnetic developer 24 may be externally supplemented with silica particles to improve its fluidity, or abrasive particles to polish the surface of the photoreceptor, which is the latent image carrier 11, in a transfer-type image forming apparatus. You may. Alternatively, a non-magnetic developer 24 containing some magnetic particles may be used.
かくしてＬ記例の現像装置は、非磁性現像剤についてこ
れを現像剤保持部材面に対し各部十分な帯電値を有し、
丘つ均一な薄層とし長期にわたって安定にコーティング
形成させることができる。Thus, the developing device of Example L has a non-magnetic developer having a sufficient charge value at each part with respect to the surface of the developer holding member, and
It is possible to form a stable coating over a long period of time as a uniform thin layer.
従ってこの薄い現像剤層により潜像保持体面の潜像を鮮
明に且つ解像性よく現像処理することか０丁能となる。Therefore, with this thin developer layer, it is possible to develop the latent image on the surface of the latent image carrier clearly and with good resolution.
又磁性現像剤は色彩の鮮やかなものを得ることができる
から１色再現性に優れた高品位のカラーコピー（中色、
多色、天然色）を得ることができる。また磁性粒子拘束
部材を現像剤保持部材の移動方向下流側に傾けて配置し
たことから現像剤保持部材」二の法線方向の磁界よりも
接線方向の磁界を強くでき、又磁性粒子循環域限定部材
により磁性粒子の安定循環性も相まって、磁性粒子拘束
部材部での現像剤のブロッキング、現像剤の融着や磁性
粒子の漏れ等を防止できる。従って現像剤として圧力定
着用トナーを用いることもできる。In addition, magnetic developers can produce vivid colors, making it possible to produce high-quality color copies with excellent single-color reproducibility (medium colors,
Multicolor, natural color) can be obtained. In addition, since the magnetic particle restraining member is tilted toward the downstream side in the moving direction of the developer holding member, the magnetic field in the tangential direction of the developer holding member can be made stronger than the magnetic field in the normal direction, and the magnetic particle circulation area is limited. Coupled with the stable circulation of the magnetic particles by the member, it is possible to prevent blocking of the developer at the magnetic particle restraining member, fusion of the developer, and leakage of the magnetic particles. Therefore, a pressure fixing toner can also be used as the developer.
ところでＪ―記例の装置のように現像剤供給容器に対す
る現像剤成分の投入に順序があるものにおいてはその投
入ｃｒｔ序を間違えた場合良好な現像作用を得ることが
できなくなる。上記例装置についていえば、順序を間違
えて現像剤供給容器１４内に先ず非磁性現像剤２４を、
次いで磁性粒子２０を投入した場合は原理上現像スリー
ブ１２面に対して非磁性現像剤の各部均一な薄層を形成
させることが不能となるばかりか、その現像剤が現像ス
リーブ１２と磁性ブレード２３との間の隙間部や、現像
スリーブ１２と容器開口下縁部１４ａとの間の隙間部か
ら多Ｓ１１に容器外へ漏出飛散してしまう。By the way, in the case where there is an order in which the developer components are introduced into the developer supply container, such as the apparatus described in Example J, if the order of the introduction is incorrect, it will not be possible to obtain a good developing effect. Regarding the above-mentioned example device, the non-magnetic developer 24 is first placed in the developer supply container 14 in the wrong order.
If the magnetic particles 20 are then added, it is theoretically impossible to form a uniform thin layer of non-magnetic developer on each part of the surface of the developing sleeve 12. The particles leak and scatter out of the container from the gap between the developing sleeve 12 and the lower edge 14a of the opening of the container.
本発明はこのような投入順序間違いを厳に防止するよう
に工夫したものである。The present invention has been devised to strictly prevent such mistakes in the order of loading.
第３図及び第４図は本発明の一実施例装置の構成を示し
たものである。第１図例装置と共通する部材には共通の
符号を付して再度の説明を省略する。第３図において、
４０は内部に第１現像剤成分の貯蔵室４１と第２現像剤
成分の貯蔵室４２の２室を区画具備させ、第１貯蔵室４
１に磁性粒子２０（磁性粒子分のみ、或は磁性粒子と非
磁性現像剤との混合体）を、第２貯蔵室４２に非磁性現
像剤２４（該現像剤のみ、或はこれに少：」１゜の磁性
粒子、その他流動助剤拳研磨剤等を外添したもの）を封
じ込めて収容した磁性粒子・現像剤貯蔵容器（以下貯蔵
容器と略称する）である。FIGS. 3 and 4 show the configuration of an apparatus according to an embodiment of the present invention. Components common to those in the device shown in FIG. 1 are given the same reference numerals and repeated explanations will be omitted. In Figure 3,
40 is divided into two compartments: a storage chamber 41 for a first developer component and a storage chamber 42 for a second developer component.
1 contains magnetic particles 20 (magnetic particles only, or a mixture of magnetic particles and non-magnetic developer), and non-magnetic developer 24 (only the developer or a small amount thereof) is placed in the second storage chamber 42. This is a magnetic particle/developer storage container (hereinafter abbreviated as storage container) that contains and contains 1° magnetic particles (externally added with flow aids, polishing agents, etc.).
」二足貯蔵容器４０の下部周囲には外方へ張り出させて
７ランジ４３を、現像装置の現像剤供給容器１４の上面
開口の外周縁に外方へ張り出させて、没けたフラツジ１
４ｃの上に重ね合せて両フラ／／４３ａ１４ｃをヒフ１
トめ４４等することによりＬ記貯蔵容器４０を現像剤供
給容器１４の上に一体に結合して取付けである。A 7 flange 43 is provided around the bottom of the two-legged storage container 40 to project outward, and a sunken flange 43 is provided to project outward from the outer periphery of the upper opening of the developer supply container 14 of the developing device.
Overlay both hula on top of 4c //43a14c to hif1
The L storage container 40 is integrally connected and attached onto the developer supply container 14 by attaching the toe 44 or the like.
貯蔵容器４０において磁性粒子２０を封入収容した第１
貯蔵室４１は容器４０内の左部に区画形成してあり、非
磁性現像剤２４を１１人収容した第２！！？蔵室４２よ
りも小さい。しかし必要量の磁セ１粒子２０を収容する
だけの容量はある。そして貯蔵容器４０をに記のように
現像剤供給容器１４の−１−面間口部に取付けたとき磁
性粒子２０を収容封入した第１貯蔵室４１は現像剤供給
容器１４内の磁性粒子循環域限定部材２７の略直上位置
に位置する関係構成になっている。・貯蔵容器４０の底
板４５には第１貯蔵室４１及び第２貯蔵室４２に対応す
る面部分に夫々室長り方向に第１及び第２の細長開口４
６・４７を形成してあり、該開口は夫々第１及び第２の
シール部材４８・４９で常時は封じられている。第１及
び第２シール部材４８・４９は夫々幅は第１及び第２の
開口４６・４７よりも大きく、長さは各開口長さの２倍
量１；の、引っ張り強度か強く柔軟性のある細長テープ
状物（例えば合成樹脂シートのテープ状裁断物）である
。第４図はシール部材４８・４９を開封した状態を示す
。The first container containing the magnetic particles 20 is stored in the storage container 40.
A storage chamber 41 is partitioned on the left side of the container 40, and a second storage chamber 41 accommodates 11 non-magnetic developers 24. ! ? It is smaller than storage room 42. However, there is enough capacity to accommodate the required amount of magnetic particles 20. When the storage container 40 is attached to the −1-face frontage of the developer supply container 14 as shown in FIG. It has a relational configuration in which it is located substantially directly above the limiting member 27. - The bottom plate 45 of the storage container 40 has first and second elongated openings 4 in the longitudinal direction of the chambers in the surface portions corresponding to the first storage chamber 41 and the second storage chamber 42, respectively.
6 and 47, and the openings are normally sealed with first and second seal members 48 and 49, respectively. The first and second sealing members 48 and 49 have a width larger than the first and second openings 46 and 47, respectively, and a length that is twice the length of each opening 1; It is a certain elongated tape-like material (for example, a tape-like cut material of a synthetic resin sheet). FIG. 4 shows the seal members 48 and 49 in an unsealed state.
第５図・第６図は夫々第１及び第２の開口４６・４７に
対するシール部材４８Φ４９の適用要イ（１を示す、底
板４５を下方から見上げた分解斜面図と、シール開封途
中のシール部材４８・４９の状＃１を示す分解斜面図で
ある。即ち第１の開口４６は、その開口全長域に対して
第１のテープ状シール部材４８の一端側から第１の開口
４６の長ざ分に相当するシール部材長さ部分を当てがっ
てそのシール部材長さ部分の縁部を開口４６周囲の底板
下面部分にヒートシール等の手段で貼着することにより
封じ状態にし、残余のシール部材長さ部分４８ａは上記
貼着したシール材長さ部分の先端部側へ折り返す、４８
ｂはその折り返し曲げ部を示す。Figures 5 and 6 are an exploded perspective view of the bottom plate 45 looking up from below, showing the application of the seal member 48Φ49 to the first and second openings 46 and 47, respectively, and a seal member in the middle of opening the seal. 48 and 49. In other words, the first opening 46 has a length extending from one end side of the first tape-shaped sealing member 48 to the entire opening length area. Apply a length of the seal member corresponding to the length of the opening 46, and adhere the edge of the length of the seal member to the lower surface of the bottom plate around the opening 46 using heat sealing or other means to create a sealed state, and the remaining seal The member length portion 48a is folded back toward the tip side of the pasted sealant length portion, 48
b indicates the folded portion.
一方第２の開口４７も上記第１の開口４６の場合と同要
領で：５２のテープ状シール部材４９でシール処理され
ている。折り返したシール部材４８ａ、４９ａの自由端
４８ｃ 、４９ｃは把手５０に斜線部分で接着されてい
る。ここで、４９ｂで折り曲げた第２のシール部材の残
余部−分４９ ａは第１のソール部材の折り返し部４８
ａよりも長さ文だけ長くなる様途中にたるみ４９ｄを持
たせて把手５０に接着される。On the other hand, the second opening 47 is also sealed with a tape-shaped sealing member 49 of 52 in the same manner as the first opening 46 described above. Free ends 48c and 49c of the folded seal members 48a and 49a are bonded to the handle 50 at the hatched portions. Here, the remaining portion 49a of the second seal member folded at 49b is the folded portion 48 of the first sole member.
It is glued to the handle 50 with a slack 49d in the middle so that it is longer than a by a length.
以１：のようにシール処理した後、貯蔵容器４０を現像
装置に組込む。シール部材の開封はユーザにより把手５
０を引くことにより行われる。このソール部材の開封途
中の状態を第６図に示す。把１′−５０を引くと第１の
シール部材４８は折り返し部４８ｂより順次開口４６を
開封する。この昨第２のシール部材４９は折り返した部
分に長さ又のたるみかある為、長さ党だけ把手５０を引
いた後初めて折り返し部４９ｂより開口４７が開封され
始める。そして長さ文だけ開封位置がずれた状態で第１
．第２のシール部材が最後迄引かれる。After sealing as in 1: below, the storage container 40 is assembled into a developing device. The seal member can be opened by the user using the handle 5.
This is done by subtracting 0. FIG. 6 shows the state of this sole member in the middle of being unsealed. When the handle 1'-50 is pulled, the first sealing member 48 sequentially opens the opening 46 from the folded portion 48b. Since the second sealing member 49 has some slack in the folded portion, the opening 47 begins to be opened from the folded portion 49b only after the handle 50 is pulled by the length. And the first one with the opening position shifted by the length sentence.
．． The second seal member is pulled all the way.
従って、磁性粒子２０は非磁性現像剤２４に比べて必ず
先にスリーブ１２１−に落下することになる。こうして
第４図の如く、先ず磁性粒子かスリーブ１２上に供給さ
れ、更にその上に非磁性現像剤が供給されるので、非磁
性現像剤が現像容器外へ漏出飛散するようなことがない
。Therefore, the magnetic particles 20 always fall into the sleeve 121- earlier than the non-magnetic developer 24. In this way, as shown in FIG. 4, first the magnetic particles are supplied onto the sleeve 12, and then the non-magnetic developer is further supplied thereon, so that the non-magnetic developer does not leak out of the developer container and scatter.
なお、シール部材４８．４９のｋざのＸ又は。Note that the seal members 48 and 49 have an X or
磁性粒子次いで非磁性現像剤を投入した時のこれら粒子
の広がり方により適宜選択する必要がある。即ち、非磁
性現像剤を落下させた時には、現像剤の流動性が良いと
スリーブ軸方向に広がるが、その広がった現像剤がスリ
ーブ上の磁性粒子で覆われていない部分に到達しない様
に文を定める必要がある。It is necessary to make an appropriate selection depending on how these particles spread when magnetic particles and then non-magnetic developer are introduced. In other words, when non-magnetic developer is dropped, if the developer has good fluidity, it will spread in the axial direction of the sleeve. It is necessary to define
以上の様に本発明によれば、第１．第２のシール部材の
折り返し部より把ｆ部迄の長さを変えるという簡単な構
成により、投入順序を間違え、先に非磁性現像剤を投入
してしまう様な事故を確実に防止することができる。更
に第１．第２のシール部材を一動作で開封することがで
き、操作性の 、すぐれた現像装置を提供することがで
きる。As described above, according to the present invention, the first. By changing the length from the folded part of the second seal member to the grip part, it is possible to reliably prevent accidents such as putting the non-magnetic developer in the wrong order and putting it in first. can. Furthermore, the first. The second sealing member can be opened in one action, and a developing device with excellent operability can be provided.
なお未実施例においては磁性粒子と非磁性現像剤の２種
類を用いた例を述べたが、本発明は現像剤の種類に何ら
限定されるものではない。また磁性粒子と非磁性現像剤
の貯蔵容器４０が現像剤供給容器１４と一体化された使
いすてタイプの現像装置を例として述べたが、この点に
ついても貯蔵容器が現像装置とは別体で交換可能な補給
用カートリッジにも適用することができる。In addition, although an example using two types of developer, magnetic particles and non-magnetic developer, was described in the non-example, the present invention is not limited to the type of developer at all. In addition, although a single-use type developing device has been described as an example in which the storage container 40 for magnetic particles and non-magnetic developer is integrated with the developer supply container 14, in this respect as well, the storage container is separate from the developing device. It can also be applied to replaceable replenishment cartridges.
第１図は現像装置の一例の要部側面図、第２図はその装
置の現像スリーブと磁性ブレードの配設姿勢角度説明図
、第３図は磁性粒子φ非磁性現像剤投入ｉ（１の状態の
現像装置の側面図、第４図は投入後の現像装置の側面図
、第５図及び第６図は貯蔵容器底板とシール部材の分解
斜視図である。
図において、
１４は現像剤容器、２０は磁性粒子、２４は非磁性現像
剤、４１は磁性粒子の貯蔵室、４２は非磁性現像剤の貯
蔵室、４８は第１のシール部材、４９は第２のシール部
材、
を表わす。
第３図
第４図Fig. 1 is a side view of the essential parts of an example of a developing device, Fig. 2 is an explanatory view of the arrangement posture and angle of the developing sleeve and magnetic blade of the device, and Fig. 3 is a diagram showing magnetic particles φ non-magnetic developer input i (1). 4 is a side view of the developing device after loading, and FIGS. 5 and 6 are exploded perspective views of the bottom plate of the storage container and the sealing member. In the figure, 14 is the developer container. , 20 represents magnetic particles, 24 represents a non-magnetic developer, 41 represents a storage chamber for magnetic particles, 42 represents a storage chamber for non-magnetic developer, 48 represents a first seal member, and 49 represents a second seal member. Figure 3 Figure 4
Claims (1)
記第１及び第２の貯蔵部の各開口部を覆う第１と第２の
シール部材とを有し、第１及び第２のシール部材の長さ
を異ならせて、第１の開口部の開封に遅らせて第２の開
口部を開封するようにしたことを特徴とする現像装置。a first developer storage section, a second developer storage section, and first and second seal members that cover each opening of the first and second storage sections; and a developing device characterized in that the lengths of the second sealing members are made different so that the second opening is opened later than the opening of the first opening.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59213365A JPS6193469A (en) | 1984-10-12 | 1984-10-12 | Developing device |
| US06/663,484 US4615608A (en) | 1983-10-31 | 1984-10-22 | Developing apparatus |
| GB08427356A GB2150863B (en) | 1983-10-31 | 1984-10-30 | Developing apparatus |
| DE19843439678 DE3439678A1 (en) | 1983-10-31 | 1984-10-30 | DEVELOPMENT DEVICE |
| FR8416582A FR2554252B1 (en) | 1983-10-31 | 1984-10-30 | ELECTROPHOTOGRAPHIC DEVELOPMENT APPARATUS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59213365A JPS6193469A (en) | 1984-10-12 | 1984-10-12 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6193469A true JPS6193469A (en) | 1986-05-12 |
| JPH028306B2 JPH028306B2 (en) | 1990-02-23 |
Family
ID=16637970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59213365A Granted JPS6193469A (en) | 1983-10-31 | 1984-10-12 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6193469A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62283361A (en) * | 1986-06-02 | 1987-12-09 | Hitachi Ltd | Powdery toner developing device |
| JPS6329776A (en) * | 1986-07-23 | 1988-02-08 | Mita Ind Co Ltd | Picture producing machine |
| JPS6449953U (en) * | 1987-09-22 | 1989-03-28 | ||
| JPH0251182A (en) * | 1988-08-12 | 1990-02-21 | Sharp Corp | Developing device for copying machine |
| JPH0229054U (en) * | 1988-08-12 | 1990-02-23 | ||
| US6188855B1 (en) | 1998-02-27 | 2001-02-13 | Nec Corporation | Toner cartridge capable of preventing sealing film from breaking |
| JP2007298871A (en) * | 2006-05-02 | 2007-11-15 | Fuji Xerox Co Ltd | Accommodation object supply vessel, and image forming unit |
-
1984
- 1984-10-12 JP JP59213365A patent/JPS6193469A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62283361A (en) * | 1986-06-02 | 1987-12-09 | Hitachi Ltd | Powdery toner developing device |
| JPS6329776A (en) * | 1986-07-23 | 1988-02-08 | Mita Ind Co Ltd | Picture producing machine |
| JPS6449953U (en) * | 1987-09-22 | 1989-03-28 | ||
| JPH0251182A (en) * | 1988-08-12 | 1990-02-21 | Sharp Corp | Developing device for copying machine |
| JPH0229054U (en) * | 1988-08-12 | 1990-02-23 | ||
| US6188855B1 (en) | 1998-02-27 | 2001-02-13 | Nec Corporation | Toner cartridge capable of preventing sealing film from breaking |
| JP2007298871A (en) * | 2006-05-02 | 2007-11-15 | Fuji Xerox Co Ltd | Accommodation object supply vessel, and image forming unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028306B2 (en) | 1990-02-23 |
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